Laravel 5.3 hasManyThrough 通过中间 table

Question

我有以下 table 关系：

organizations
  id - integer

organization_users
  organization_id - integer (FK)
  user_id - integer (FK)

users
  id - integer

我试图通过 eloquent 关系获取组织的所有用户。这是我的 Organization.php 模型及其关系：

class Organization extends Model
{
  public function Users(){
      return $this->hasManyThrough('App\User', 'App\OrganizationUser',
                                   'organization_id', 'user_id', 'id');
...
}

我尝试了很多这种关系的组合，例如

return $this->hasManyThrough('App\User', 'App\OrganizationUser',
                                   'user_id', 'organization_id', 'id');

但都出现了相同的错误（这个错误来自第一个查询）：

Illuminate\Database\QueryException with message 'SQLSTATE[42S22]: Column not
 found: 1054 Unknown column 'organization_users.id' in 'on clause' (SQL: select
 `users`.*, `organization_users`.`organization_id` from `users` inner join 
`organization_users` on `organization_users`.`id` = `users`.`user_id` where 
`organization_users`.`organization_id` = 1)'

我是否可以让关系检索 user_id 来查询用户 table 而不是 Laravel 尝试检索 organization_users.id？如果没有，还有其他解决方法吗？

Answer 1

这是many to many关系。

用户模型：

public function organizations()
{
    return $this->belongsToMany('App\Organization','organization_users');
}

组织模型：

  public function users()
   {
        return $this->belongsToMany('App\User','organization_users');
   }

要获取所有用户及其组织：

$users=User::with('organizations')->get();
foreach($users as $user)
{
   print_r($user->name);
   foreach($user->organizations as $organization)
   {
     print_r($organization->name);
   }
}

Answer 2

你所描述的看起来可能是'Many-to-Many'关系。

https://laravel.com/docs/5.3/eloquent-relationships#many-to-many

Laravel 5.3 hasManyThrough 通过中间 table

Laravel 5.3 hasManyThrough through an intermediate table

php

laravel

laravel-5.3